Tube Fittings Nut

One-Way Shutoff Quick Couplings

One-Way Shutoff Quick Couplings

One-Way Shutoff Quick Couplings (one touch type and safety series) feature safety function and one touch connection.

Push-in Pneumatic Fittings

Push-in Pneumatic Fittings

Push-in Pneumatic Fittings include stainless Speed Controller.


40-Year Tube Fittings Nut Manufacturer - CHIBIN Machine

Based in Taiwan, CHIBIN Machine Co., Ltd., since 1980, is a Tube Fittings Nut | stainless steel pipe fittings supplier. Specialized in medical and semiconductor industries and the main products, including tube fitting, compression fitting, rapid pneumatic fitting, push-in pneumatic fitting, hydraulic fitting, high pressure pipe fitting, quick coupling, nozzle, needle valve, etc.

Pipe Fittings that are ISO certified and TTQS awarded. Internal standards using random inspection based on the U.S. military MIL-STD-105E specifications. More than 10,000pcs of standard products are in ready stock. Custom products are up to 3,000pcs. CHIBIN Machine provides one-stop service in developing, designing, manufacturing, and assembling, as well as custom solutions to achieve high standards from worldwide clients.

CHIBIN Machine has been offering customers high-quality pipe and tube fittings since 1980, both with advanced technology and 20 years of experience, CHIBIN Machine sures each customer's demands are met.

Tube Fittings Nut


Double-Ferrule Fittings Nut

Two-Ferrule Fittings Nut.
Two-Ferrule Fittings Nut.

Tube Fittings-Nuts are widely used in instrumentation, liquid and gas tubing. Special treated nut is suitable for use in food and medical industries. Nut threads are electroplated to prevent wear and improve smoothness for easier installation.


  • Double-ferrule metal to metal sealing with free leakage design.
  • Nut threads are electroplated to reach wear resistance.
  • 316 stainless steel material features resistance to heat, impact, and corrosion.

Technical Data

Working Pressure:
(1) 1/2 inch (12mm) Below: 210 kgf/cm²
(2) 3/4 inch (19mm) Above: 100 kgf/cm²
Suitable Tube O.D.: 1/8 ~ 1 inch, 3 ~ 25mm


  • Suitable for Instruments, Meters, Piping Engineering, Low Pressure and High Temperature Pneumatic Pipelines, Medical Equipment, Agricultural Appliances, Mechanical Parts Assembly, Food Industry, Chemical Plant, Petrochemical Plant, Water Treatment Industry.


N Tube Fittings Nut
Part NoTube ODThread SizeDimensionsH
N03M35/16" x 201212
N04M43/8" x 201212
N06M67/16" x 2013.514
N08M81/2" x 201416
N10M105/8" x 201519
N12M123/4" x 2017.522
N14M1413/16" x 2017.524
N15M1513/16" x 2017.524
N16M167/8" x 2017.527
N18M181" x 201830
N20M201" x 2017.532
N22M221-1/8" x 2017.536
N25M251-1/8" x 202138
N Tube Fittings Nut
Part NoTube ODThread SizeDimensionsH
N10I1/8"5/16" x 201212
N15I3/16"3/8" x 201212
N20I1/4"7/16" x 2013.514
N30I3/8"9/16" x 2014.417
N40I1/2"3/4" x 2017.522
N60I3/4"1" x 2017.528.6
N80I1"1-5/16" x 202138
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